Isotope Geochemistry Postdoctoral Fellow - 95202
Organization: CH-Chemical Sciences
The Chemical Sciences Division (CSD, https://chemistry.lbl.gov/) at Lawrence Berkeley National Laboratory (LBNL, https://www.lbl.gov/) has an opening for an isotope geochemistry Postdoctoral Fellow to study stable isotopes and trace elements in biominerals, including amorphous and crystalline calcium carbonates, 100% biogenic.
Your research will focus on developing a fundamental understanding of the effect that phase transitions occurring during biomineral formation have on both isotopic and elemental compositions. Specifically, we are interested in understanding how conversion of amorphous calcium carbonate (ACC) to carbonate biominerals (e.g., calcite) controls the isotopic and chemical composition of the final biomineral. The Postdoctoral Fellow research will be done using x-ray and infrared spectromicroscopies at the Advanced Light Source (ALS) and isotope geochemistry at UC Berkeley. The overarching goal is to (i) observe whether the isotopic and chemical compositions of ACC precursors and the final biomineral differ from one another and therefore (ii) the extent of isotope or element exchange reactions during the various phase transitions that turn ACC into the final biominerals.
Berkeley Lab's Energy Sciences Area (ESA, https://www.lbl.gov/research-areas/energy-sciences/) consists of the Materials Sciences Division, Chemical Sciences Division, and two national user facilities: The ALS, a synchrotron facility, and the Molecular Foundry, a nanoscience research center. This combination of world-class expertise and capabilities provides a vibrant environment for collaborative, interdisciplinary science. In addition to the ESA, this position will be closely connected to the UC Berkeley Earth and Planetary Science Department, and the lab's Energy Geoscience Division (EGD), both of which have long-standing expertise in isotope geochemistry. "Chemistry of CaCO3 phase transitions", an award to PI Gilbert and co-PI Stolper, is funded through the Department of Energy-BES-Geosciences program, which focuses on understanding fundamental chemistry in earth sciences. The postdoctoral researcher will learn from Gilbert and Stolper methods in spectromicroscopy and isotope geochemistry. The candidate is expected to independently conduct innovative experiments, collect, analyse, and interpret results from the above studies, and draft manuscripts for publication in peer-reviewed scientific journals.
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